On 01/01/25 14:30, Christian Zigotzky wrote:
Hello Paolo,
First, I wish you a Happy New Year. Thanks a lot for your patch! I
patched the RC5 of kernel 6.13 with your patch and KVM HV works! :-)
kvm_hv_final.patch:
virt/kvm/kvm_main.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index de2c11dae231..5177e56fdbd5 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -2975,10 +2975,11 @@ kvm_pfn_t __kvm_faultin_pfn(const struct
kvm_memory_slot *slot, gfn_t gfn,
.refcounted_page = refcounted_page,
};
- if (WARN_ON_ONCE(!writable || !refcounted_page))
+ if (WARN_ON_ONCE(!refcounted_page))
return KVM_PFN_ERR_FAULT;
- *writable = false;
+ if (writable)
+ *writable = false;
*refcounted_page = NULL;
return kvm_follow_pfn(&kfp);
---
patch -p0 < kvm_hv_final.patch
patching file a/virt/kvm/kvm_main.c
Now, we have a good patch after 56 test kernels!!!!!!!!!
I will test all QEMU/KVM HV components and report, if they work.
Cheers,
Christian
Test results:
- Guest performance: good
- Guest boot time: short
- KVM HV works (-enable-kvm)
- SMP works (-smp 4)
- QEMU User Networking (SLIRP) via VirtIO_net works (Tested it with SSH
and with a web browser)
- QEMU USB Audio works (Tested it with some audio files in the guest system)
- VirtIO GPU works
- Virtual mouse and keyboard controller work (VirtIO input)
- 9p mount of a host folder via VirtIO works in the guest system
- Serial output from the guest works (console=ttyS0,115200)
- Shutdown and reboot work
Final result: I have not noticed any changes compared to KVM HV with
kernel 6.12.
@Paolo
There has been a lot of work in KVM for kernel 6.13.
Could you please just explain in a few words the news about KVM? I would
like to share the KVM news with our users.
Thanks
--
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